<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0,shrink-to-fit=no">
    <title>Document</title>
    <link rel="stylesheet" href="../bootstrap-4.2.1-dist/css/bootstrap.css">
    <script src="../jquery.js"></script>
    <script src="http://cdn.staticfile.org/popper.js/1.14.6/umd/popper.js"></script>
    <script src="../bootstrap-4.2.1-dist/js/bootstrap.js"></script>
</head>
<body class="container">
    <h4 class="mb-3">两个触发器切换一个目标</h4>
    <button class="btn btn-warning mb-3" data-toggle="collapse" data-target="#multi-collapse">莫等闲、白了少年头，空悲切。</button>
    <button class="btn btn-primary mb-3" data-toggle="collapse" data-target="#multi-collapse">待从头、收拾旧山河，朝天阙。</button>
    <div class="collapse"id="multi-collapse">
        <div class="card card-body">
            满江红
        </div>
    </div>
</body>
</html>